nicer logging of returned output

playwriter/src/executor.ts

@@ -61,6 +61,7 @@ const EXTENSION_NOT_CONNECTED_ERROR = `The Playwriter Chrome extension is not co
 const NO_TABS_ENABLED_ERROR = `No browser tabs have Playwriter enabled. Click the extension icon on at least one tab to enable it.`
 
 const MAX_LOGS_PER_PAGE = 5000
+const DEFAULT_PLAYWRIGHT_TIMEOUT = 10_000
 
 const ALLOWED_MODULES = new Set([
   'path', 'node:path',
@@ -113,6 +114,12 @@ function isRegExp(value: any): value is RegExp {
   )
 }
 
+function isPromise(value: any): value is Promise<unknown> {
+  return typeof value === 'object' && value !== null && typeof value.then === 'function'
+}
+
+
+
 export class PlaywrightExecutor {
   private isConnected = false
   private page: Page | null = null
@@ -279,6 +286,8 @@ export class PlaywrightExecutor {
     }
     const page = pages[0]
 
+    context.setDefaultTimeout(DEFAULT_PLAYWRIGHT_TIMEOUT)
+
     context.pages().forEach((p) => this.setupPageConsoleListener(p))
 
     await this.preserveSystemColorScheme(context)
@@ -353,6 +362,8 @@ export class PlaywrightExecutor {
     }
     const page = pages[0]
 
+    context.setDefaultTimeout(DEFAULT_PLAYWRIGHT_TIMEOUT)
+
     context.pages().forEach((p) => this.setupPageConsoleListener(p))
 
     await this.preserveSystemColorScheme(context)
@@ -619,6 +630,7 @@ export class PlaywrightExecutor {
 
       const vmContext = vm.createContext(vmContextObj)
       const wrappedCode = `(async () => { ${code} })()`
+      const hasExplicitReturn = /\breturn\b/.test(code)
 
       const result = await Promise.race([
         vm.runInContext(wrappedCode, vmContext, { timeout, displayErrors: true }),
@@ -627,15 +639,19 @@ export class PlaywrightExecutor {
 
       let responseText = formatConsoleLogs(consoleLogs)
 
-      if (result !== undefined) {
-        responseText += 'Return value:\n'
-        if (typeof result === 'string') {
-          responseText += result
-        } else {
-          responseText += JSON.stringify(result, null, 2)
+      // Only show return value if user explicitly used return
+      if (hasExplicitReturn) {
+        const resolvedResult = isPromise(result) ? await result : result
+        if (resolvedResult !== undefined) {
+          const formatted = util.inspect(resolvedResult, { depth: 4, colors: false, maxArrayLength: 100, breakLength: 80 })
+          if (formatted.trim()) {
+            responseText += `[return value] ${formatted}\n`
+          }
         }
-      } else if (consoleLogs.length === 0) {
-        responseText += 'Code executed successfully (no output)'
+      }
+      
+      if (!responseText.trim()) {
+        responseText = 'Code executed successfully (no output)'
       }
 
       for (const screenshot of screenshotCollector) {